Streptoprocne rutila
Silhouette: Aviceda (vectorized by T. Michael Keesey) · PhyloPic
In 3 days ~10%
The chestnut-collared swift (Streptoprocne rutila) is a species of bird in subfamily Cypseloidinae of the swift family Apodidae. It is found from Mexico and Trinidad south to Peru and Bolivia. The chestnut-collared swift has at various times been placed in genera Cypseloides and Chaetura.
The chesnut-collared swift is one of the smaller members of genus Streptoprocne. It is 12 to 14 cm (4.7 to 5.5 in) long and weighs about 21 g (0.74 oz). It has a wide slightly notched tail and broad wings. Adult males of the nominate subspecies S. r. rutila have a sooty blackish brown crown, a blackish brown back, slightly paler rump and uppertail coverts, and a sooty blackish brown tail. They have a narrow black patch around the eye and grayish brown cheeks, chin, and throat with... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San José | 🇨🇷 Costa Rica | |
| 2 | Medellín | 🇨🇴 Colombia | |
| 3 | Guayaquil | 🇪🇨 Ecuador | |
| 4 | Cali | 🇨🇴 Colombia | |
| 5 | Guatemala City | 🇬🇹 Guatemala | |
| 6 | Mexico City | 🇲🇽 México |
Rare
Under 5% of wildlife watchers report a Chestnut-collared Swift sighting in Amboró National Park on a given day, based on 9 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 199th most-seen of the 273 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
September
In that month about 10% of wildlife watchers report a Chestnut-collared Swift in Amboró National Park on a given day, against under 5% in July–August and October–May, the lowest months. That is one of Amboró National Park's driest months, with about 90 mm of rain against 340 mm in January. June has too few records to rate.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Chestnut-collared Swift sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
10th of 31
Of the 31 parks where we can rate Chestnut-collared Swift sightings, Amboró National Park ranks 10th at under 5%. The best odds are in El Triunfo (Mexico, about 10%), Podocarpus National Park (Ecuador, about 10%) and Henri Pittier National Park (Venezuela, under 5%).
GBIF citizen-science records
It is estimated from how often the Chestnut-collared Swift is recorded against all the birds logged in Amboró National Park (9 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
